Đáp án+Giải thích các bước giải:
`p) (5x-2)/3=(5-3x)/2`
`<=> 2(5x-2)=3(5-3x)`
`<=> 10x-4=15-9x`
`<=> 19x = 19`
`<=> x = 1`
Vậy `x=1`
`q) (10x+3)/(12)=1+(6+8x)/9`
`<=> (10x+3)/(12)=(9+6+8x)/9`
`<=> (10x+3)/(12)=(15+8x)/9`
`<=> 9(10x+3)=12(15+8x)`
`<=> 90x + 27 =180 + 96x`
`<=> -6x = 153`
`<=> x = (-51)/2`
Vậy `x=(-51)/2`
`u) 2(x+3/5)=5-((13)/5+x)`
`<=> 2x + 6/5 = 5-(13)/5-x`
`<=> 2x+6/5 = (12)/5-x`
`<=> 3x = 6/5`
`<=> x = 6/5:3`
`<=> x =2/5`
Vậy `x=2/5`
`v) 7/8x-5(x-9)=(20x+1,5)/6`
`<=> 7/8x - 5x + 45 =(20x+1,5)/6`
`<=> (-33)/8x+45=(20x+1,5)/6`
`<=> 6((-33)/8x+45)=20x+1,5`
`<=> (-99)/4x+270=20x+1,5`
`<=> (-179)/4x=(-537)/2`
`<=> x = (-537)/2:(-179)/4`
`<=> x =6`
Vậy `x=6`
`z) (7x-1)/6+2x=(16-x)/5`
`<=> (5(7x-1))/(30)+(60x)/(30)=(6(16-x))/(30)`
`=> 35x-5+60x = 96-6x`
`<=> 35x + 60x +6x=96+5`
`<=> 101x = 101`
`<=> x = 1`
Vậy `x=1`
`s) 4(0,5-1,5x)=-(5x-6)/3`
`<=> 12(0,5-1,5x)=6-5x`
`<=> 6 - 9x = 6 - 5x`
`<=> -4x = 0`
`<=> x = 0`
Vậy `x = 0`
